John fobd



( odeL Y N0. 275,898. Patented, Apr. 17, 1883.

WITNESSES INVENTOR fifl7wmv y I I BY I ATTORNMEVYSI UNITED STATES PATENT()FFICE.

JOHN FORD, OF PORTNEUF, PORTNEUF COUNTY, QUEBEC, CANADA.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 275,898, dated April 17,1883.

Application filed July 27, 1882.

To all whom it may concern:

Be it known that I, JOHN FORD, of Portneu t, Portneuf county, Quebec,Canada, have invented a new and Improved Nut-Lock, ot'which thefollowing is a fnll,clear, and exact description.

This invention consists ofa not of two parts,

one having a cavity in the face or top eccentric to the bolt-hole and astud projecting from one corner of the face, together with another part,forming a check-nut by having a boss eccentric to the bolt-hole, andalso having a projection or raised part on its face, which shall engagewith the stud on the nut first named when the parts are in thenon-interlocking position, and can be both together screwed onto thebolt. Then by turning one part of the nut while the other part is notturned the eccentric boss of the one binds in the eccentric cavity ofthe other nut, thereby locking said nuts on the bolt securely, ashereinafter described.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional elevation of a railjoint, showing thefish-plates secured. by my improved locking-nut contrivance. Fig. 2 is aface View of the nut, and Fig. 3 is a back view of the check-nut. Figs.4, 5 are detail perspective views, the former showing the position ofthe studs D I when the nuts are ready for being screwed on the bolt,while Fig. 5 shows the position of the two nuts when the check-nut hasbeen turned to lock the cam-- surfaces.

Renewed March 15, 1683.

(Model.) Patented in Canada May 13, 1881, No.11,245.

The nutA has a deep cavity, B, in the face eccentric to the bolt-hole U,and it also has astud, D, projecting from one corner beyond therestofthe face E. The check-nut F has a boss, G, eccentric to thebolt-hole H, and it has a stud, I, to turn against the front of the stud'1).

In order to apply the nuts to the bolt, the check-nut F is placed withits boss in the cavity B, so as to bring the stud I against the stud 1),as shown in Fig. 4 of the drawings. The two are then screwed on the bolttogether until nut A is screwed home. Then check-nut F is turned so faras to force the high or broad part of the eccentric boss G through thenarrowest part of the eccentric cavity B, thereby binding the nutslaterally against the bolt and causing the parts to interlock, so thatthey cannot be unlocked except by turning the check-nut back again.

It will thus be seen that the studs I are of great importance inapplying the nuts to each other, so that they may be screwed on thebolt.

Having thus described my invention, I claim as new and desire to secureby Letters Patent The improved nut-lock, consisting of nut A, havingeccentric cavity B in it, and stud D on its face, and check-nut F,having eccentric boss G and projection I, said nuts being combinedsubstantially as specified.

JOHN FORD.

Witnesses:

Jos. OANTILLON,

Of Quebec, Clerk of Turnpike Trust. I. LANGLOIS BELL,

Of Quebec, Attorney.

